Numerical Investigation of Sediment-Laden Flow in a High-Head Francis Turbine Runner

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Abstract:

The 3-D turbulent particulate-liquid two-phase flow equations are employed in this study. The computing domain is discretized with a full three-dimensional mesh system of unstructured tetrahedral shapes. The finite volume method is used to solve the governing equations and the pressure-velocity coupling is handled via a Pressure Implicit with Splitting of Operators (PISO) procedure. Simulation results have shown that the sand erosion rate on pressure side is more than on the suction side of the blade. The maximum value of sand volume fraction and the maximum value of sand erosion rate are at same location.

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Periodical:

Advanced Materials Research (Volumes 860-863)

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1542-1546

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December 2013

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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